CN101061738B - Method for transferring a user equipment from first wireless network to second wireless network - Google Patents

Method for transferring a user equipment from first wireless network to second wireless network Download PDF

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Publication number
CN101061738B
CN101061738B CN2005800394394A CN200580039439A CN101061738B CN 101061738 B CN101061738 B CN 101061738B CN 2005800394394 A CN2005800394394 A CN 2005800394394A CN 200580039439 A CN200580039439 A CN 200580039439A CN 101061738 B CN101061738 B CN 101061738B
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network
subscriber equipment
controller
wireless network
identity
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CN101061738A (en
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O·居约
T·于尔科南
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Nokia Technologies Oy
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Nokia Oyj
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
    • H04W36/1443—Reselecting a network or an air interface over a different radio air interface technology between licensed networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery

Abstract

The disclosure relates to transfer of a user equipment from a network to another network. In the method a user equipment communicating with a first network is transferred from the first network to a second network providing resources to a plurality of operators. After initiation of the transfer, an operator is selected for the user equipment amongst the plurality of operators. A controller of the second network is then provided with information regarding the identity of the selected operator, and the user equipment is transferred to the second network. Information regarding the identity of the selected operator is also sent to the user equipment.

Description

Subscriber equipment is forwarded to the method for second wireless network from first wireless network
Technical field
The disclosure relates to communication system, and more particularly but nonexcludability ground, relates in communication system subscriber equipment from a network transitions to another network, and described other network provides sharable Internet resources.
Background technology
Communication system can be counted as a kind of facility, and it is implemented in the communication session that carries out between two or more entities of for example subscriber equipment that is associated with communication system and/or other node.Communication can comprise for example communication of speech, data, multimedia etc.The subscriber equipment that is connected to communication system can for example have two-way telephone calling or multidirectional Conference Calling or data and connect.Subscriber equipment can transmit and come from or arrive grouped data between server entity or the two or more subscriber equipment.
Communication system is operated according to given standard or standard usually, these standards or regulation and stipulation the various entities that are associated with system of permission what is done and should how to go and realize.For example, whether standard or standard definable subscriber equipment have circuit switched service or packet-switched services or the two has.Usually also define the communication protocol and/or the parameter that be used to connect.For example, the subscriber equipment mode that how to be able to access communication system and how to implement communication between the unit of subscriber equipment and communication network is normally based on predefined communication protocol.In other words, need definition signal post based on specific " rule " set so that subscriber equipment can communicate via communication system.
For subscriber equipment provides the communication system of radio communication is known.These systems are commonly referred to mobile system, although in some system, mobility can be limited in fact little zone.An example of mobile system is public land mobile network (PLMN).PLMN is usually based on cellular architecture.Another example is at least in part based on the mobile system of the use of communication satellite.Mobile communication also can provide by other mobile system, for example passes through wireless lan (wlan).
In common wireless system, base station services is in a plurality of subscriber equipmenies.Subscriber equipment also can be in the radio communication of identical time and two or more base station carrying out.Communication on the wave point between subscriber equipment and the base station can be based on suitable communication protocol.The base station can be understood that it is the part of Access Network (AN), and this Access Network makes and is referred to as core net (CN) in the core that travelling carriage can visited communication network.
The technical staff knows basic principle of operation and the unit that wireless access is required.These examples comprise for example CDMA (code division multiple access), WCDMA (wideband CDMA), TDMA (time division multiple access), FDMA (frequency division multiple access) or SDMA (space division multiple access) and the connecting system that mixes thereof.
Each base station and/or Access Network can be controlled by suitable control appliance.The base station of Access Network and the operation of miscellaneous equipment can be controlled by one or several controlled entity.Two or more base stations can be controlled by controller.For example, the third generation (3G) Wideband Code Division Multiple Access (WCDMA) (WCDMA) network uses the controlled entity that is called radio network controller (RNC) to control the operation of wireless access network.In the second generation (2G) GSM (global mobile system), Access Network is understood that to be controlled by base station controller (BSC).Radio network controller can be controlled a plurality of base stations of Access Network or all base stations.
Access network controller is connected to suitable core network entity.One or more gateway nodes can be provided for core net is connected to other network.For example, mobile core network can be connected to other and moves or fixed line communications network or for example communication network and/or other packet data network of IP (Internet Protocol).
Communication network is usually by Virtual network operator operation and operation.The operating environment of Virtual network operator has changed and has become more dynamic on its attribute.For example, the cooperation between the operator, acquisition, creative agreement etc. force operator to rethink that they use the mode of its Internet resources.These change the thinking of the possibility of having opened shared network resource.Yet, before more dynamic operation and resource-sharing come true, have the obstacle of some technology, and be not only that the technical elements of network is by standardized mode.
The notion of " network is shared " should be broadly construed, and include but not limited to following various scheme, for example, be connected to the public wireless access network of a plurality of core net, share a plurality of Radio Access Networks of a core net, or be connected to a plurality of Radio Access Networks of a plurality of core net.
Routinely, themselves network is operated and had in telco service provider.Can realize that by roaming agreement etc. the side except that the network ownership uses network.For example, when specifying GSM and then specifying the UMTS system, do not consider the possibility of coming shared portion or whole network by two or more independently commercial entities.Under the principle of " operator, a wireless access network ", design GSM.Although the GSM network has some possibilities that foundation structure is shared, it can not suitably be supported in the resource-sharing on the wireless access network rank.The initial designs of third generation partner program (3GPP) system has also been followed identical principle.The result is that standard lacks the commercial agreement that can realize this type of and more effectively uses the functional of resource.
The proposal that network is shared comprises for example scheme of gateway core net (GWCN) and MOCN (MOCN).The GWCN scheme is intended to be used to inherit shared network, and how definition disposes the gateway core net at the shared network framework, wherein except Radio Access Network, mobile switching centre (MSC) and service GPRS (general packet radio service) support node (SGSN) also are shared.The GWCN scheme also describes how this plan implementation is become to have the functional of old network.It also allows the wireless access network operation business to become or do not become a member of core network operators.
At one of the GWCN scheme nearest improvement is the possibility of being selected network by subscriber equipment.In this scheme, subscriber equipment can be known the operator that service is provided in shared network.The support subscriber equipment that uses in this scheme can be that the information about available operator that is provided by shared network, any apparatus of selecting an available operator and indicating the operator of selecting to network can be provided.
Support that the subscriber equipment of shared network is quite recent proposal.Therefore a plurality of non-support subscriber equipmenies will in a foreseeable future middlely use.The subscriber equipment of sharing when network enabled not is when Access Network is transferred to another Access Network, and target share of access network controller will comprise operator's identity of common use, and this identity is understood by such subscriber equipment.In specific system, for example based on those systems of 3G standard, when subscriber equipment when an Access Network is transferred to another Access Network, wireless access network will provide globally unique positional information to subscriber equipment.Therefore, positional information comprises the PLMN identity as a positional information part.In the communication system of using shared network resource, problem is which PLMN identity is provided for subscriber equipment, because provide a plurality of operators of service to be arranged in identical physical network, so multiple choices are arranged.Suggestion is for non-support subscriber equipment, and the PLMN identity should be the identity (public PLMN-ID) of wireless access network rather than the identity of any possible operator.
Yet, access network controller do not need to know subscriber equipment whether be configured to can the network enabled resource share.Therefore, controller may not know that for which subscriber equipment, it should comprise the information about the identity of possible service network.
In addition, when with subscriber equipment when non-shared network is switched or be repositioned onto the shared network with GWCN configuration, may not necessarily know among the PLMN of network which of target share of access network controller should be served subscriber equipment.
The problem of should be appreciated that is not limited to transfer to shared network from non-shared network.Similar problem also can occur in the shared network.
Subscriber equipment can be transferred to another connecting system from connecting system, for example in switching or reorientating.Technically, the shared subscriber equipment of network enabled may be registered to and and serve subscriber equipment so that carry out the different core network operators that is used for packet-switched domain of core network operators that circuit switching connects.This may always not expect.
After switching, subscriber equipment is that RRC connects, therefore and needn't be for example in the message of " INTIAL DIRECT TRANSFER " message of access network controller, comprising core network identity, because Access Network should know what the identity of the PLMN of selection is.Yet, access network controller need be known the PLMN that selects for subscriber equipment in this case, because it need be given its indication subscriber equipment and therefore need to store it, thereby when NAS-RAU must send via RANAP:INTIAL UE MESSAGE (receiving RRC:INTIAL DIRECT TRANSFER message from subscriber equipment after, because being RRC, subscriber equipment connects, so it does not comprise identity), access network controller can be indicated identity to the shared SGSN under the GWCN situation.In addition, after switching from the circuit switching of non-shared network or another share of access network controller, in order to allow user equipment registration to packet-switched domain, access network controller is ordered to send RRC:UTRAN MOBILITY INFORMATION to subscriber equipment, and it comprises the core network information Info that indicates the PLMN of current selection to subscriber equipment.Support subscriber equipment may need to obtain correct PLMN identity,, may need to use it after a while because be released and subscriber equipment when turning back to the free time when circuit-switched call.In this case, subscriber equipment can be carried out background scanning and check whether the PLMN of its current selection is correct high priority PLMN.If not this situation, then subscriber equipment can be carried out another routing region updating (RAU).If access network controller sends public PLMN-ID to subscriber equipment and substitutes the CN-PLMN-ID that selects among the core network information info among the UTRAN MOBILITY INFORMATION, then subscriber equipment will always be carried out RAU after circuit-switched call is released, and this causes the signaling aspect to increase significantly.
Therefore need a kind of improved solution to comprise the switching of subscriber equipment or reorientating of other in the communication system of at least one shared network with processing.
Summary of the invention
Embodiments of the present invention are devoted to solve one or several in the top problem.
According to an execution mode, provide a kind of method that is used for subscriber equipment is transferred to from first wireless network second wireless network.The core net controller that this method is included in second wireless network receives the subscriber equipment be used to initiate to communicate with first wireless network is transferred to second wireless network from first wireless network request, second wireless network provides resource to a plurality of operators, core net controller at second wireless network is selected operator for this subscriber equipment from this a plurality of operators, provide information from the core net controller of second wireless network to the radio network controller of second wireless network about the identity of selected operator, by radio network controller subscriber equipment is transferred to second wireless network, and send information to subscriber equipment about the identity of selected operator from radio network controller.
According to another execution mode, provide a kind of core net controller that is used to be configured to provide the communication system of resource to a plurality of operators.This controller comprises the subscriber equipment that is used at will be from first network transitions to second network, from a plurality of operators, select the processor of operator, and be used for the information about the identity of selected operator is sent to other controller so that send to the interface of subscriber equipment.
According to another execution mode, provide a kind of access network controller that is used to be configured to provide the communication system of resource to a plurality of operators.This controller comprises at least one interface, be used to receive from other controller, about the information of the identity of the operator that will use by subscriber equipment and be used for described information is sent to subscriber equipment, and processor, be used for determining whether subscriber equipment has the shared network ability and be used to control the identity information that will be transferred to subscriber equipment.
According to another execution mode, provide a kind of and be used for and the subscriber equipment that the network service of resource is provided to a plurality of operators.This subscriber equipment comprises the radio part that is used for carrying out with communication network radio communication, and at least one controller, is used for process user equipment from communicating to the transfer that communicates with second network with first network.This at least one controller is configured to handle the information about the identity of the operator of selecting from a plurality of operators, is dividing reception this information via this wireless part after the transfer of second network is initiated.
According to another execution mode, a kind of communication system that comprises a plurality of communication networks and controller is provided, this at least one communication network provides resource to a plurality of operators, and this controller is used for selecting operator and will sending to other controller about the information of the identity of selected operator from a plurality of operators at subscriber equipment.This other controller is configured to determine subscriber equipment whether share by support resource, and after having determined the sharing of subscriber equipment network enabled resource, and will send to subscriber equipment about the information of the identity of selected operator.
Embodiments of the present invention can provide advantage, because the resource of shared network can more effectively be used.When subscriber equipment moves to shared network and have ongoing circuit switching (CS) calling simultaneously, can stop its packet switching of carrying out wrong network (PS) registration and stop to be registered to the higher priority network afterwards, this can increase the signaling traffic load in the network.Can share to enable for the network of supporting subscriber equipment and continue the mobility processing.
Description of drawings
In order to understand the present invention better, will come with reference to the accompanying drawings by example, wherein:
Fig. 1 represents the communication system that the present invention can be implemented;
Fig. 2 is the flow chart that an embodiment of the invention are shown;
Fig. 3 represents the scheme from the non-shared network of 2G to the switching of 3G shared network, and corresponding signaling process;
Fig. 4 represents the scheme from non-shared 3G network to the switching of sharing 3G network, and corresponding signaling process; And
Fig. 5 illustrates the scheme from shared 3G network to the switching of another shared 3G network, and corresponding signaling process.
Embodiment
Although notice at the term that uses the second generation and the third generation (3G) WCDMA (Wideband Code Division Multiple Access (WCDMA)) network shown in the disclosure with the example communication system of describing in detail, for example GSM, UMTS (universal mobile telecommunications system) or CDMA2000 public land mobile network (PLMN), but the execution mode of the solution of being advised can be used in any wireless communication system, wherein by embodiments of the present invention, the similar problem in the reorientating of subscriber equipment can be solved.
In the mobile communications network of for example public land mobile network (PLMN), a plurality of base stations are configured to wirelessly to send signals and from a plurality of mobile subscriber equipments 1 received signal wirelessly to a plurality of mobile subscriber equipments 1.For the sake of clarity, there is not base station shown in Figure 1.Similarly, each mobile subscriber equipment 1 can be to suitable base station transmission wireless signal and from suitable base station received signal.Usually mobile subscriber equipment can move in the Access Network that is provided by one or more base stations and move to another overlay area from an Access Network overlay area.Because mobile subscriber equipment can move freely in mobile communication system, so the position of travelling carriage can change in time.Mobile communication system can be provided by a plurality of mobile communications networks.Suitable subscriber equipment has required wireless radio transmission unit and controller function, thereby can send and receive the data of automatic network, and handles its control command that can receive from network and required control information is sent to network.
Fig. 1 also represents to have three access network controllers, and more particularly, three radio network controllers (RNC) 2,3 and 4 Access Network 5.Each base station is typically connected to access network controller.Access network controller provides the control to the unit of the Access Network of for example base station usually.Access network controller is connected to other network element, for example suitable core net (CN) controller entity usually via the interconnection that is fit to.Core net controller entity can comprise for example mobile switching centre (MSC) and/or service GPRS (general packet radio service) support node (SGSN) 6,7 and 8, gateway node (not shown in Fig. 1) etc.
With reference now to Fig. 2, flow chart.Subscriber equipment can be by the process for example switching or reorientate from a network transitions to another network.In response to triggering the scheduled event that shifts, this shifts in step 100 and starts.Can carry out transfer from the connecting system of the first kind to the connecting system of another kind of type.For example, can carry out between the RAT of from GSM to UTRAN (UMTS Terrestrial radio access network) (wireless access technology) switches.
Give new server net controller with notification of user equipment.If new core net is a shared network, then at step 102 place, the core net controller can be selected suitable operator.Then, the Access Network that is associated with new core net will be selected to be notified at step 104 place.
Then subscriber equipment is transferred to new network.In this stage, access network controller can send appropriate information message to subscriber equipment, for example " UTRAN MOBILITYINFORMATION " message.After access network controller had received the affirmation that switching finished, for example from " HANDOVER TO UTRANCOMPLETE " message of subscriber equipment, this informational message can be used as one first resource control messages and sends.The location of user equipment that this informational message is used for comprising the identity of PLMN is notified to subscriber equipment, and subscriber equipment has signaling with this PLMN and is connected.Usually only comprise a PLMN identity in " UTRAN MOBILITYINFORMATION " message.
For example the target access network controller of Fig. 1 RNC can be indicated the identity of core network operators in " UTRANMOBILITY INFORMATION " message, at this Virtual network operator, is configured to the shared subscriber equipment of network enabled and has had the signaling connection.Under the situation of shared network, this may be need so that instruct follow-up message, for example be used for the routing region updating (RAU) to correct PLMN of the subscriber equipment that network enabled shares.
Execution mode provides a kind of mechanism should to which suitable identity of notification of user equipment so that determine to network.Under the GWCN situation of for example mentioning, may need such selection in the above, although always should be appreciated that this is can be necessary.Necessity for example can occur in such application, and shared MSC/SGSN resource of wherein several core network operators or operator do not have any special-purpose connection the to target share of access network controller.Therefore, may need to notify the identity of access network controller about selected operator.This can be provided at for example from " RELOCATION REQUEST " message of sharing MSC.
Yet, share core network element (for example MSC) and may always not know whether subscriber equipment is to support subscriber equipment.Network element may still will send CN-PLMN-ID to target share of access network controller in " RELOCATIONREQUEST " message.Then at step 108 place, being determined whether by access network controller need be to the notification of user equipment identity.
In step 110, the identity of selected operator is sent to the support subscriber equipment.If detect not network enabled resource-sharing of subscriber equipment at the Access Network place, then alternatively, access network controller can send public-PLMN-ID, sees step 112, promptly shares the PLMN-ID of wireless access network.This is the example of the non-support subscriber equipment identity that still can detect and understand.
Access network controller can be configured to make it can determine subscriber equipment whether share by network enabled.This information can be in the 3G system by from for example, the access aspect (AS) in " RRCCONNECTION REQUEST " message and/or " INTER RAT HANDOVERINFO " message of being included in discharges indication and derives." INTER RATHANDOVER INFO " is subscriber equipment can send to the message of network before switching generation example.Then this message is delivered to the target access network controller by network." INTERRAT HANDOVER INFO " comprises the conforming information element of the access aspect standard of regulation subscriber equipment and specific 3GPP version.So under situation about switching from 2G to 3G, it is " non-support subscriber equipment " or " support subscriber equipment " that the target access network controller can obtain the user from this knowledge.Under situation about switching from 3G to 3G, the source access network controller can be from the information of " RRC CONNECTION REQUEST " acquisition about the ability of subscriber equipment.In hand off signaling, the ability information that receives is sent to target access network by the source access network controller.
The following illustrative scheme relates to from the non-shared network of 2G to be switched to the RAT of 3G shared network, and reorientate/switch in the UMTS that shares 3G network from non-shared 3G network, and from sharing 3G network reorientating/switching to another shared 3G network.
In the example that is described below, " RELOCATION REQUEST " message is expanded transit carrier's identity information by utilizing an additional information element (IE).This information element can be used for carrying core network identity, for example when with the CN-PLMN-ID of subscriber equipment when non-shared network is switched or be repositioned onto the shared UMTS network with GWCN configuration.
Fig. 3 illustrates the handover scheme from the non-shared network of 2G to the shared network of 3G, and the circuit-switched call that more particularly illustrates from the dedicated GSM network is how to switch to the shared UMTS network with GWCN configuration.Notice that identical solution also can be applicable to other and switches, for example the 3G shown in Fig. 4 switches to 3G.More particularly, Fig. 3 illustrates following message and stage:
1.GSM base station controller (BSC) 2 determines that switching and transmission " BSSMAP Handover Required (requiring BSSMAP the to switch) " message that carry out another network arrive grappling MSC 6.
2. grappling MSC 6 sends " BSSMAP Handover Required (requiring BSSMAP to switch) " message to target MSC 7, and this message comprises identity (for example international mobile subscriber identity of subscriber equipment; IMSI).
3. target (gateway) MSC 7 selects core net (CN) operator and sends " RANAP Relocation Request (the RANAP request of reorientating) " to RNC 3 from the available CN operator of sharing gateway core net (GWCN).This message comprises the identity (CN-PLMN-ID) of the CN operator of selection.
4. after having distributed Radio Resource, Target RNC 3 sends " RANAP Relocation Request Ack (the RANAP request of reorientating is confirmed) " message to target MSC 7.
5. target MSC 7 sends " BSSMAP Handover RequestAck (BSSMAP Handover Request Acknowledge) " to grappling MSC 6.
6. grappling MSC 6 sends " BSSMAP Handover Command (BSSMAP switching command) " message to source BSC 2.Then BSC 2 order subscriber equipmenies 1 are carried out the switching of Target cell.
7. when subscriber equipment 1 was linked into Target cell, RNC 3 was notified to selected core net by sending " RANAP Relocation Detect (RANAP reorientates detection) " message to target MSC 7 with this.After successful execution was switched, RNC 3 sent " RANAP Relocation Complete (RANAP reorientates and finishes) " message to target MSC 7.
8. target MSC 7 is transmitted " RANAP Relocation Detect (RANAP reorientates detection) " and the conduct of " Relocation Complete (reorientate and finish) " message " B S SMAP Relocation Detect " and " Relocation Complete " message to grappling MSC 6.
9. new RNC 3 gives subscriber equipment 1 by sending " RRC UTRAN Mobility Information (RRC UTRAN mobility information) " message with its position informing.In other possible information, this message comprises the identity (CN-PLMN-ID) of the selected core network operators of sharing at network enabled of subscriber equipment.The RNC 3 AS from be included in " RRC CONNECTION REQUEST (RRC connection request) " message and " INTERRAT HANDOVER INFO (handover information between RAT) " message discharges the knowledge of indication acquisition about the ability of subscriber equipment 1 (support/non-support).If subscriber equipment 1 is not to support subscriber equipment, then alternatively, message 9 can comprise public PLMN-ID, or any other indication of the non-support subscriber equipment shared wireless access network that can detect and understand.
10. when following if desired, subscriber equipment can be by carrying out the registration at packet-switched services via RNC 3 to " Routing Area Update (routing region updating) " message that SGSN 7 ' for example sends in " RRC Initial Direct Transfer (RRC initial direct transfer) " message pellucidly.Because subscriber equipment is connected to network by RRC, therefore in step 9, the CN-PLMN-ID that is provided by RNC 3 needn't be provided " RRC Initial Direct Transfer (RRC initial direct transfer) " message.RNC 3 can use the identity that receives in " RELOCATION REQUEST (request of reorientating) " message it is inserted into " RANAP Initial UE Message (RANAP initial UE message) "." RANAP Initial UE Message (RANAP initial UE message) " also comprises " Routing Area Update (the routing region updating) " message from subscriber equipment 1.Which core network operators of CN-PLMN-ID in the possible operator of SGSN 7 ' indication should be served subscriber equipment 1.
Can avoid the different behaviors of subscriber equipment in different schemes by above-described mechanism, wherein subscriber equipment, rather than RNC indication operator identity.
Fig. 4 illustrates another example, wherein switches for the circuit-switched call from special-purpose UMTS network to the shared UMTS network with the shared subscriber equipment of GWCN configuration and network enabled.More particularly, Fig. 4 illustrates following message and stage:
1. source radio network controller (RNC) 2 determines carry out the switching of another network." RANAP Relocation Required (requiring RANAP to reorientate) " message is sent to grappling mobile switching centre (MSC) 6.
2. grappling MSC 6 sends " RANAP Relocation Request (the RANAP request of reorientating) " message to target MSC 7, and this message comprises user's identity.
3. target (gateway) MSC 7 selects core net (CN) operator and sends " RANAP Relocation Request (the RANAP request of reorientating) " to new RNC 3 from the CN operator of sharing GWCN.This message comprises the identity of selected CN operator.
4. after having distributed Radio Resource, new RNC 3 sends " RANAP Relocation Request Ack (the RANAP request of reorientating is confirmed) " message to target MSC 7.
5. target MSC 7 sends " RANAP Relocation RequestAck (the RANAP request of reorientating is confirmed) " message to grappling MSC 6.
6. grappling MSC 6 sends " RANAP Relocation Command (RANAP reorientates instruction) " message to source RNC 2.Then RNC 2 order subscriber equipmenies 1 are carried out the switching of Target cell.If subscriber equipment 1 is by communicating the Radio Resource that has used Target RNC 2 via lur interface and Serving RNC 3, then needn't send any handover command messages to subscriber equipment 1.
7. when subscriber equipment 1 was linked into Target cell, RNC 3 was notified to core net (CN) by sending " RANAP Relocation Detect (RANAP reorientates detection) " message to target MSC 7 with this.After handover success was carried out, RNC 3 sent " RANAP Relocation Complete (RANAP reorientates and finishes) " message to target MSC 7.If subscriber equipment 1 has used the Radio Resource of Target RNC 3 by communicating by letter with RNC 3 via the lur interface, then when beginning when Target RNC 3, send " Relocation Detect (reorientating detection) " message as Serving RNC.
8. target MSC 7 is transmitted " RANAP Relocation Detect (RANAP reorientates detection) " and " Relocation Complete (reorientate and finish) " message to grappling MSC 6.
9.RNC 3 give subscriber equipment 1 by sending " RRC UTRAN Mobility Information (RRCUTRAN mobility information) " message with its position informing.If the subscriber equipment network enabled is shared, then this message can comprise the identity (CN-PLMN-ID) of selected CN operator.
10. when following if desired, subscriber equipment can be by carrying out the registration at packet-switched services via RNC 3 to " Routing Area Update (routing region updating) " message that SGSN 7 ' for example sends in " RRC Initial Direct Transfer (RRC initial direct transfer) " message pellucidly.Because subscriber equipment is connected to network by RRC, therefore in step 9, the CN-PLMN-ID that is provided by RNC 3 needn't be provided " RRC Initial Direct Transfer (RRC initial direct transfer) " message.RNC 3 can use the identity that receives in " RelocationRequest (request of reorientating) " message it is inserted into " RANAP Initial UE Message (RANAP initial UE message) "." RANAPInitial UE Message (RANAP initial UE message) " also comprises " Routing Area Update (the routing region updating) " message from subscriber equipment 1.Which core network operators of CN-PLMN-ID in the possible operator of SGSN 7 ' indication should service-user equipment 1.
Fig. 5 illustrates another example, wherein switches to occur in from sharing 3G network to the LA border of another shared 3G network.
MSC 7 is as relay MSC or target MSC between transfer period, thereby it can have the suitable data processor and selects suitable operator to implement suitable algorithm.This selection can be based on various possible algorithms and parameter.For example, user's identity (for example international mobile subscriber identity; IMSI) can be used as a choice criteria.Provide some exemplary schemes below:
A of operator and the B of operator shared network.If for the subscriber of B or its affiliated company carries out the switching of shared network, then preferably B becomes the service provider of the user in the shared network.Selection can also be based on statistics and/or historical data.Share operator just in shared network for example A obtain 60% international roaming user and B obtains 40% international roaming user and reaches an agreement.In this case, the core net controller will have to implement algorithm to distribute the subscriber according to these operators and operator's identity of selecting is indicated to corresponding user equipment.Possible choice criteria can be the identity of having carried out the network of switching from it.For example, be the switching of sharing the shared network of one of side if carry out from the dedicated network of A to A wherein, then preferably in this specified scheme, A is chosen as service provider.
Preferably after initiating transfer, select operator.Target MSC (relaying) received switch or the request of reorientating and target MSC send transfer to the request of Target RNC before, can carry out by target MSC (relaying) and select.Selection can be at least in part based on information pre-configured in target MSC.This pre-configured information can for example include but not limited to make that the user with Home PLMN identity " X, Y, Z " is assigned to the operator " A " in the shared network, user with Home PLMN identity " I, J, K, L " is assigned to the operator " B " in the shared network, and the user with Home PLMN identity " P, Q, R " is assigned to the operator " C " in the shared network.Then can even be assigned to operator " A ", " B " or " C " in the shared network to having any user of other Home PLMN identity based on Distribution Statistics.
The selection of being undertaken by the target core network controller is preferred, because may not have agreement between all related each operators.Each operator of shared network may not have to reach roaming agreement with the operator of non-shared network.The core net controller of " old " is not the part of shared network, and if its operation be not subjected to the influence of any aspect of shared network, then therefore it is preferred.
In the example of Miao Shuing, MSC 7 indicates the identity of the selected core network operators in " RANAPRelocation Request (the RANAP request of the reorientating) " message that sends to RNC in the above.For some MSC, the function of this class is enforceable, and for example those meet the shared GWCN according to the version 6 (rel-6) of 3GPP.
Whether the access network controller in the shared network also has suitable algorithm is to support subscriber equipment to detect subscriber equipment.This for example can provide by suitable software, and this software is configured to detect the information of enabling from the message that for example is included in access aspect (AS) the release indication in " RRC CONNECTION REQUEST (RRC connection request) " message and/or " INTER RAT HANDOVER INFO (handover information between RAT) " message and/or " RRC CONNECTION SETUP COMPLETE (RRC connects setting to be finished) " message.
If determine that by software or another logic subscriber equipment is to support subscriber equipment, then software can comprise the identity of selected core network operators in the message of for example " RRC UTRAN Mobility Information (RRC UTRAN mobility information) " message.
Notice under the situation about switching between the MSC in shared network that MSC is shared in grappling may be needed to send CN-PLMN-ID by the E-MAP interface.
Use the example of CN-PLMN-ID above as the possibility identity.The possibility that also has other, for example work as " RELOCATION REQUEST (request of reorientating) " message and be sent to access network controller (for this access network controller from core net node, sending core net node is not the core net node of acquiescence) time, possibility is to be used for the 3GPP version 5 and the global CN-ID IE of the lu-flex/NNSF function of version after a while.
In the above example, the transfer from a connecting system to another connecting system occurred in before user equipment (UE) sends the identity of selecting.In all application, this is optional.In this optional execution mode, the target access network controller can comprise selected operator identity into and sending to pellucidly in " RRC Handover Command (RRC switching command) " message of subscriber equipment via target core network controller, source network controller and source wireless access net controller.
Can provide top data processing function by one or more data processor entities.When the computer program code products of suitable modification was loaded on the computer, it can be used for realizing execution mode, for example be used for carry out calculating and search, coupling and combination operation.Being used to provide on the bearing medium that the program code product of operation can be stored in for example carrier, card or band and by bearing medium provides.Can be via data network download program code product.Enforcement can be disposed suitable software in location server.Therefore may not need the hardware that adds in some applications.In location server, may need the memory and the disposal ability of adding.
Although should be appreciated that at the subscriber equipment of for example travelling carriage and described embodiments of the present invention, embodiments of the present invention can be applicable to the subscriber equipment of other adequate types arbitrarily.
Be appreciated that other execution mode of the present invention also is fine, but will keep within the scope of the invention.Therefore the present invention also can be applicable to other mobile technology except that GSM and WCDMA.
Although it should further be appreciated that the top illustrative embodiments of the present invention of having described, do not departing under the situation of the scope of the present invention that limits as appended claims, can make various deformation and modification to disclosed solution.

Claims (16)

1. one kind is used for subscriber equipment is transferred to the method for second wireless network from first wireless network, and this method may further comprise the steps:
Receive at the core net controller of described second wireless network and to be used to initiate the subscriber equipment that will communicate with first wireless network and to transfer to the request of described second wireless network from described first wireless network, described second wireless network provides resource to a plurality of operators;
Core net controller at described second wireless network is that described subscriber equipment is selected operator from described a plurality of operators;
Provide information from the core net controller of described second wireless network to the radio network controller of described second wireless network about the identity of described selected operator;
By described radio network controller described subscriber equipment is transferred to described second wireless network;
Send information from described radio network controller to described subscriber equipment about the identity of described selected operator.
2. method according to claim 1 further comprises following subsequent step: send information about the identity of described selected operator via the radio network controller in described second wireless network to the core net controller of described second wireless network or another core net controller in described second wireless network by described subscriber equipment.
3. method according to claim 1 further comprises following subsequent step: the radio network controller from described second wireless network sends information about the identity of described selected operator to the described core net controller of described second wireless network or another core net controller in described second wireless network.
4. according to claim 2 or 3 described methods, wherein the information about the identity of described selected operator sends to the core net controller of described second wireless network or another core net controller described second wireless network from described radio network controller by radio resource control information.
5. method according to claim 4, wherein said radio resource control information are " initial direct transfer " message.
6. method according to claim 1, wherein the information about the identity of described selected operator sends to described subscriber equipment from described radio network controller by resource control information message.
7. method according to claim 6, wherein said resource control information message are " UTRAN mobility information " message.
8. method according to claim 1, the described radio network controller of wherein said second wireless network is the wireless access network of described second wireless network.
9. method according to claim 8 wherein sends to described radio network controller from the core net controller of described second wireless network by reorientating request message about the information of the identity of described selected operator.
10. method according to claim 1, from described radio network controller before described subscriber equipment sends information about the identity of selected operator, further comprise identity with selected Virtual network operator from the source/the grappling controller is transferred to the step of the target/window machine controller in the shared network.
11. method according to claim 1, from described radio network controller before described subscriber equipment sends information about the identity of selected operator, further be included in described radio network controller and determine whether described subscriber equipment is provided with definite step of the ability that network enabled shares.
12. comprising, method according to claim 11, wherein said determining step analyze the message relevant with described transfer.
13. method according to claim 1, wherein the step of described subscriber equipment being transferred to described second wireless network by described radio network controller comprises the wireless access technology switching of execution from second generation mobile communications network to the 3G (Third Generation) Moblie network.
14. method according to claim 1, wherein the step of described subscriber equipment being transferred to described second wireless network by described radio network controller comprises the transfer of execution from non-shared 3G (Third Generation) Moblie network to shared 3G (Third Generation) Moblie network.
15. method according to claim 1, wherein the step of described subscriber equipment being transferred to described second wireless network by described radio network controller comprises the transfer of execution from a shared 3G (Third Generation) Moblie network to another shared 3G (Third Generation) Moblie network.
16. method according to claim 1, from described radio network controller before described subscriber equipment sends information about the identity of selected operator, further be included in and determine the whether step of network enabled resource-sharing of described subscriber equipment in described second wireless network.
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